4. The three-day festival was billed as a three-day "neon" sleepover in Vegas. Several big name performers were involved, including Sam Hunt, Eric Church and Lee Brice.

The crowd at the Aldean show was estimated to be around 22,000.

5. At least 58 people have died and more than 500 were injured in the shooting. Police say the suspect, identified as 64-year-old Stephen Craig Paddock, was found dead on the 32nd floor of the Mandalay Bay Resort and Casino.

CNN

Paddock was a resident of a retirement community in nearby Mesquite, Nevada.

Police had previously been looking for a second person-of-interest who was identified as Marilou Danley - the suspect's companion and roommate. At an early morning press conference Monday, police said they had found Danley, but did not release any more details as to what she may have known about the shooting suspect.